Charge your USB-C powered laptop on-the-go Leave your USB-C power adapter at home and charge your laptop via any readily available barrel power with the Dell Adapter 4.5mm Barrel to USB-C. Throw the space-saving and lightweight adapter in your bag and head to your next meeting with confidence, since compatible Dell 4.5mm barrel power adapters are often widely available.Get started right away with plug & play Plug the adapter into your USB-C powered laptop and begin charging instantly with barrel power.Highly portable with a space-saving and lightweight design Take the adapter with you wherever you go. Space-saving and lightweight, the adapter can be easily carried around. Just throw the adapter in your bag and head off to the next meeting or conference room.